| 可通信式智能选择性漏电保护系统的研究 |
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| 引用本文： | 牟龙华,孟庆海,刘建华.可通信式智能选择性漏电保护系统的研究[J].电工技术学报,2003,18(1):82-86. |
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| 作者姓名： | 牟龙华 孟庆海 刘建华 |
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| 作者单位： | 中国矿业大学信息与电气工程学院,221008 |
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| 基金项目： | 国家自然科学基金资助项目 (5 0 0 770 2 2 ) |
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| 摘 要： | 分析了目前矿井低压电网漏电保护系统存在的不足 ,提出了基于附加直流电源检测和零序功率方向的漏电保护新判据 ,介绍了基于这些新判据的智能漏电保护装置 ,该装置构成的可通信式漏电保护系统可以实现无级差的选择性漏电保护 ,提高了井下低压电网的安全水平
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| 关 键 词： | 漏电保护 通信 选择性 矿井低压电网 |
| 修稿时间： | 2002年9月3日 |
Research on Communication-capable Ground-fault Protection System with Intelligence and Selectivity |
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| Mu Longhua,Meng Qinghai,Liu Jianhua.Research on Communication-capable Ground-fault Protection System with Intelligence and Selectivity[J].Transactions of China Electrotechnical Society,2003,18(1):82-86. |
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| Authors: | Mu Longhua Meng Qinghai Liu Jianhua |
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| Affiliation: | China University of Mining & Technology 221008 China |
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| Abstract: | Based on the overview of ground fault protection systems for underground LV distribution networks,this paper analyzes disadvantages of ground fault protection systems being used currently.The new criteria of ground fault protection,which are based on additional DC power supply and direction of zero sequence power,are put forward.These action criteria are of very good selectivity to ground fault.The intelligent ground fault protection devices using these new criteria are developed.These devices can form a communication capable ground fault protection system.Consequently,the selective ground fault protection that has no time difference and enhanced levels of safety for underground LV distribution networks can be realized. |
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| Keywords: | Ground fault protection communication selectivity underground LV distribution network |
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